Saw-handle.



H. B. GARMAN.

SAW HANDLE.

APPLICATION FILED JAN. so, 1913.

1,078,599. Patented Nov. 11, 1913.

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H. B. GARMAN.

SAW HANDLE.

APPLICATION IILBD JAN. so, 1913.

1,078,599. Patented Nov. 11, 1913.

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COLUMBIA PLANDURAPH CO WASH NKI'I'ON D C pin or rivet 4:

HAIR-RY B.

GARMAN, or :on'rnolr, MICHIGAN,

or nn'rnorr,

ASSIGNOB OF ONE-HALF TO ROY WILSON, MICHIGAN.

SAW-HANDLE.

notation.

Application filed January. 30, 1913.

To all whom tmay concern:

Be it known that I, HARRY B. GARMAN, a citizen of the United States,residing at Detroit, in the county of VJayne and State of Michigan, haveinvented new and useful In pro vements in Saw-Handles, of which thefollowing is a specification.

My invention relates to new and useful improvements in saw handles, andhas for its object to provide a device of this character which maybemade of any suitable material such as aluminum thereby producing anexceedingly light and a strong handle for use with tools especially sawsprovided with removable blades.

A further object ofthe invention is to provide a handle of the classdescribed having apivoted bell crank lever in one arm of which ismounted one end of a saw blade, saidbell crank lever being operated by asuitablelever pivoted to the handle through the mediun'i of a slidingpin and an adjusting screw.

A still further object of the invention is to provide the operatinglever with a suitable cam portion which operates with the sliding pinandto so mount said lever that the some will be held in its closed positionby. the hand of the operator when the saw is being used.

With these ends in. view, this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, I will describeits construction in detail, referring by numeral to the accompanyingdrawing forming a part of this specification, in which- Figure 1, a sideelevation of a saw showing my improved handle applied thereto. Fig. 2,an edge view of the handle. Fig. 3, a longitudinal sectional view of thehandle showing the operating or cam lever closed, and having a portionof the saw blade and frame broken away. Fig. t, a similar view showingthe operating lever open and Fig. 5, a perspective view of the bellcrank lever.

in carrying out my invention as here embodied, 2 represents a suitableframe having a notch 3 in one end thereof to receive the carried by thesaw blade 5.

Specification of Letters Patent.

Patented Nov. 1 1, 1913..

Serial No. 7 15,217.

To the frame is attached by suitable fastening means 6, the handle 7comprising a body portion 8, having a hand hole 9 therethrough andhaving an operating lever chamber 10 formed in one edge, said chamberbeing enlarged at one end as indicated by 11 forming a cam chamber. Atone end of the handle is formed a cavity 12 in which is mounted the bellcrank lever and adjacent thereto is formed a pin opening 13.

la represents the bell crank lever having a bifrucatcd arm 15 producingthe saw blade slot 16, said arm being provided at one edge with a notch17 with which cooperates one of the pins 4 of the saw blade, said leveralso has a second arm 18 in which ispro duced the threaded opening 19adapted to receive the set screw 20. The third or attaching arm 21 ofsaid bell crank lever is provided with a hole 22 through which passes arivet or its equivalent 23 for at taching the bell cranklever to thehandle within the bell crank cavity 12.

The set screw cooperates with a sliding pin 24: mounted to sliderectilinearly in the pin opening 13. The opposite or inner end of saidpin cooperating with the cam 25 formed with the cam or operating lever26 and having a high and low cam face 27 and 28 respectively, said leverbeing mounted in. the chamber 10 and pivoted at 29 by a shoulder screwor its equivalent. The lever 26 has formed at each end, suitableextensions 30 and 31, the latter being formed with the free end of thelever, the base of said ex tension being larger than the end of thelever or of the same size as that portion of the handle body with whichitco-acts, pro ducing a shoulder 32.

In practice, when it is desired to place a blade in the saw, theoperating or cam lever 26 is opened as clearly illustrated in Fig. l,permitting the sliding pin 2% to cooperate with the lower face 28 of thecam and this iermits the bell crank lever 14 to swing to the positionshown in Fig. 1, thus permitting the pin carried by one end of the sawblade to register with the notch 1'7 after the pin on the opposite endof the saw blade has been placed in the notch 3 in the frame. The setscrew 20 is then threaded inward until the approximate adjustment hasbeen obtained and the lever 26 is then moved to its closed position asshown in Fig. 1, which causes the higher face 27 of the cam to c0-operate with the sliding pin 24 which will force said pin outward movingthe arm 18 of the bell crank lever away from the handle body which willdraw the saw blade taut. The movement of the pin 2% need not be asgreatas illustrated in Fig. 4:, since the main object is to relieve thepressure and friction between the pin and adjusting screw so that saidadjusting screw may be threaded outward and permit the bell crank leverto swing. When the saw blade has been inserted and the lever 26 moved toits closed position, said lever may be held closed by the hand, when thesaw is being used.

Of course I do not wish to be limit-ed to the exact details ofconstruction as here shown as these may be varied within the limits ofthe appended claims without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and usefulis- 1. A saw handle, a body portion, a bell crank lever pivoted to thebody portion, said bell crank lever having means to receive the end of asaw blade, a cam lever pivoted to the body and seating therein, and asliding pin for transmitting motion from the cam lever to the bell cranklever.

2. A saw handle consisting of a body portion provided with a hand hole,an operating lever chamber, a bell crank cavity and a pin opening, abell crank lever having means to receive the end of a saw pivoted in thebell crank cavity, an operating or cam lever pivoted in the leverchamber and a pin mounted in the pin opening for transmitting motionfrom the operating or cam lever to the bell crank lever.

3. A saw handle consisting of a body portion provided with a hand hole,an operating lever chamber, a bell crank cavity and a pin opening, abell crank lever having a bifurcated arm with a notch therein to receivea pin carried by a saw blade, a second arm having a threaded openingtherein, and another arm having a rivet opening therein, said bell cranklever being mounted in the bell crank cavity, a rivet for pivoting saidbell crank lever in position, a set screw mounted in the threadedopening in one of the arms of the bell crank lever, an operating leverpivoted in the lever chamber and a sliding pin mounted in the pinopening, cooperating with the operating lever and the set screw fortransmitting motion from said operating lever to the bell crank lever.

4. A saw handle consisting of a body portion provided with a hand hole,an operating lever chamber, a bell crank cavity and a pin opening, abell crank lever having a bifurcated arm with a notch therein to receivea pin carried by a saw blade, a second arm having a threaded openingtherein, and another arm having a rivet opening therein, said bell cranklever being mounted in the bell crank cavity, a rivet for pivoting saidbell crank lever in position, a set screw mounted in the threadedopening in one of the arms of the bell crank lever, an operating leverhaving an extension formed at each end thereof, the extension formedwith the free end of the lever being greater in size at its base thanthe body of the lever thereby producing a shoulder which coopcrates withthe handle body, said lever being pivoted in the lever chamber, a camhaving a high and low face formed with the operating lever and arectilinearly sliding pin mounted in the pin opening cooperating withthe cam and the set screw for transmit-tint, motion from the operatinglever to the bell crank lever.

In testimony whereof, I have hereunto af fixed my signature in thepresence of two subscribing witnesses.

HARRY B. GARlvlAN. lVitnesses ALEXANDER BROWN,

D. LAWLER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

